<%#
 Copyright 2013-2020 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://jhipster.github.io/
 for more information.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-%>
package <%= packageName %>.security.oauth2;

import javax.servlet.http.Cookie;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * A {@link Collection} of {@link Cookie}s that allows modification - unlike a mere array.
 * <p>
 * Since {@link Cookie} doesn't implement {@code hashCode} nor {@code equals},
 * we cannot simply put it into a {@code HashSet}.
 */
public class CookieCollection implements Collection<Cookie> {
    private final Map<String, Cookie> cookieMap;

    public CookieCollection() {
        cookieMap = new HashMap<>();
    }

    public CookieCollection(Cookie... cookies) {
        this(Arrays.asList(cookies));
    }

    public CookieCollection(Collection<? extends Cookie> cookies) {
        cookieMap = new HashMap<>(cookies.size());
        addAll(cookies);
    }

    @Override
    public int size() {
        return cookieMap.size();
    }

    @Override
    public boolean isEmpty() {
        return cookieMap.isEmpty();
    }

    @Override
    public boolean contains(Object o) {
        if (o instanceof String) {
            return cookieMap.containsKey(o);
        }
        if (o instanceof Cookie) {
            return cookieMap.containsValue(o);
        }
        return false;
    }

    @Override
    public Iterator<Cookie> iterator() {
        return cookieMap.values().iterator();
    }

    public Cookie[] toArray() {
        Cookie[] cookies = new Cookie[cookieMap.size()];
        return toArray(cookies);
    }

    @Override
    public <T> T[] toArray(T[] ts) {
        return cookieMap.values().toArray(ts);
    }

    @Override
    public boolean add(Cookie cookie) {
        if (cookie == null) {
            return false;
        }
        cookieMap.put(cookie.getName(), cookie);
        return true;
    }

    @Override
    public boolean remove(Object o) {
        if (o instanceof String) {
            return cookieMap.remove(o) != null;
        }
        if (o instanceof Cookie) {
            Cookie c = (Cookie)o;
            return cookieMap.remove(c.getName()) != null;
        }
        return false;
    }

    public Cookie get(String name) {
        return cookieMap.get(name);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
        for(Object o : collection) {
            if (!contains(o)) {
                return false;
            }
        }
        return true;
    }

    @Override
    public boolean addAll(Collection<? extends Cookie> collection) {
        boolean result = false;
        for(Cookie cookie : collection) {
            result|= add(cookie);
        }
        return result;
    }

    @Override
    public boolean removeAll(Collection<?> collection) {
        boolean result = false;
        for(Object cookie : collection) {
            result|= remove(cookie);
        }
        return result;
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
        boolean result = false;
        Iterator<Map.Entry<String, Cookie>> it = cookieMap.entrySet().iterator();
        while(it.hasNext()) {
            Map.Entry<String, Cookie> e = it.next();
            if (!collection.contains(e.getKey()) && !collection.contains(e.getValue())) {
                it.remove();
                result = true;
            }
        }
        return result;
    }

    @Override
    public void clear() {
        cookieMap.clear();
    }
}
